A few quotes from your 3 links. Where you tell us that the 1D4 is the biggest failure ever.
\"Auto focus tracking (AI servo) does a phenomenal job on subjects that are moving fast. I tracked bald eagles and hawks flying at and around me. I tracked huge flocks of snow geese flying straight toward me. I rapidly turned and caught a mallard landing on a pond. In all of these cases, the auto focus quickly locked on its target and tracked it. In almost all of these sequences, every shot was in perfect focus\"
\"As always, what matters is reality - how the design works in real life. And in real life use, the statement I am continually telling myself while reviewing my 1D Mark IV shots (especially those taken in AI Servo mode) is ... I\'m impressed.
Canon\'s DSLRs typically perform very well in One Shot AF mode. Like the 1D Mark III, the Canon EOS 1D Mark IV One-Shot-focuses very fast and very accurately. I don\'t perceive any differences in AF lock timing between the two\"
\"We\'ll get right to the point. The EOS-1D Mark IV\'s AF system shows signs of brilliance. For example, while testing the camera\'s ability to track an athlete running straight towards the camera, the EOS-1D Mark IV locked onto the subject and would not let go, producing sequence after sequence of mostly in-focus pictures. In several rounds, 25 or more frames in a row were either perfectly focused or just slightly out.
On the same track and under effectively identical test conditions to those that tripped up the EOS-1D Mark III\'s AI Servo AF every time, the EOS-1D Mark IV nailed it.
Mar 03, 2011 at 08:11 AM
Previous versions of Lars Johnsson's message #9368906 « Canon -> Nikon »
